Most people I knew drank happushu instead of beer--- or rather, beer made w/out wheat... or simply 'fake beer', as my gf called it...
Beer is still stupid expensive in Japan, the price you pay for Kirin, Asahi etc etc, is more expensive than you pay for it outside of Japan.
We only had Lawsons, no Famima (now in the USA!), so I don't know--- the problem was that you could only get canned beer in singles, so you could easily spend about 1200+ yen on 6pack of canned Kirin... compared to about $5.99 (712 yen) or so for the same bottled beer in the US.
Sometimes it seems as if Japan isn't even Mexico when it comes to this kind of quality of life...